Hay rake



Dec. 31, 1935. c. E. WHITE HAY RAKE Filed pril 5. 1955 INVENTOR. CAR/-EWH/Tz BY I ATTORNEY Patented Dec. 31, 1935 v UNITED STATES PATENTOFFICE HAY RAKE Carl White, Rockford, IIL, assignor to J. I. CaseCompany, Racine, Wis., a corporation The object of my invention is tosimplify and improve the construction and operation of selfdumping hayrakes of the character disclosed in I the liutter latent No. 1,947,572,issued February 5 20,: 1934, which improvements consist in certaindetails of construction and arrangements of parts under ready control ofthe operator, as will further appear;

In the accompanying drawing, forming part hereof, Figure 1 is afragmentary perspective of that portion of the rake which includes saidimmovements; Figs. 2, 3, and 4, detail views of the lever mechanism forcontrolling the movements of the rake-head, as seen when looking in thedirection of the arrows 22 in Fig. l; and Fig. 5 is a view taken on thedotted lines 5-5 in Fig. 3. In the drawing, the numerals 5, 6, indicatethe draft frame, of any desired construction and arrangement, the usualstripper fingers being omitted, and upon which frame a rake-head 1having teeth 8 is pivotally mounted, as is common, .the rake-headcarrying pawl shafts 9 the outer ends of which are adapted to engage thehubs of the carrying and drive wheels (not shown) in a well known mannerand as indicated in said patent.

In Fig. 1 the implement is shown in raking and loading position, theframe thereof embodying struts I0 constituting a sub-frame on which a 30lever I2 is pivotally mounted, at I3, said lever having. a transversetreadle Id at its forward end, an extension member I5 at its rear end,and a laterally extendingarm I6 connected by links I1 to a presser-barI8 having a stop-block I9 at its lower end adapted to engage acoupling-bar connecting said presser-bar and the sub-frame I 0. To thelever extension I 5 an adjusting screw 22 is pivotally connected, at 23,and extends between the links I'I, being pivotally connected to 40clevis straps I'I thereon by a-trunnion 24 which serves as a stop for acompression spring 25 the opposite end of which engages a nut 26 on theupper threaded end of the rod 22.

The linkage and leverage system thus described 45 in connection with thesub-frame II], it will be understood, may be assembled as a unit to beinstalled upon or removed from the frame 5, 6, the upper end of the barI8 being adjustably connected to the bracket 21 on the rake-head by a 50pin 28 and a series of holes 29, and to which bracket a hand-lever I8 issecured, which, when forced forwardly and downwardly in the direction ofthe linkage system, will rock the rakehead I to raise its teeth andmaintain the latter in such position for transportation, when said whichtrip-lever is pivotally connected to a trip- 5 plate 32 foroperatingassociated parts and the pawl shafts 9, as fully described inthe patent referred to, for raising the rake-head, during which movementof the latter the spring 25 gradually distends and the linkages assumethe position indicated in Fig. 3, and as said parts are moving into suchposition the rake-head is assisted in its upward movement by the energyof the spring. As indicated in Fig. 1, the teeth 8 are in raking orloading position, and may be brought into fixed relation to the earth bypressing treadle I4, which downward movement, as well as the completedownstroke of the teeth from their raised position, is controlled by thelinkages o as they are assuming the position shbwn in Fig. 2, duringwhich movement spring 25 gradually compresses between stop 24 and. nut26, which action retards the fall of the descending teeth 8, and whichwill be held in down position without the 25 use of locking means, asthe stop-block I9 on bar I8 will contact the coupling 20 and preventsaid bar from coming into longitudinal alignment with the coupling.

In field work it becomes necessary to draw the rake over hummocks orother ground irregularities with the teeth in gathering or down positionwhen the'elements of the linkage system have normally assumed therelation indicated in Fig.

2, with the stop I9 engaging coupling 20, in which 35 manner the teethwould be maintained in fixed position. However, in order to provide forflexibility of the teeth in such circumstances I employ an adjustingdevice 35 mounted on the forward frame, at 5, by means of a keeper 36 or40 otherwise, which, when adjusted to contact with lever I2, as shown inFig. 4, disengages the stop I9 from coupling 20, so that when the rakeis moving over bumpy ground the unlocked linkage will permit therake-head to freely rock, and consequently the ends of the teeth willfollow irregularities of the ground, but when such condition does notexist the device 35 may be readjusted to the position shown in Fig. 2 sothat bar I8 and coupling 20 will be engaged in substan- 59 tially lockedcondition.

From the foregoing description it will be understood that the operationof the rake-head may be controlled in a simple manner by mechanismconstituting a linkage system centralized on the rake frame to beactuated by an attendant on the implement, or which latter may be drawnby a tractor and the parts thereof controlled by the operator in aconvenient manner.

I claim as my invention:

1. In a hay rake, a frame, a toothed rake-head rockingly supported onthe frame, means for rocking the rake-head comprising a presser-barconnected thereto, means connecting the bar and frame, a lever mountedon the frame having a rear extension and a laterally extending arm, alink connecting the arm and bar, a tension-rod connecting the leverextension and link, and adjusting means on the frame engageable with thelever for maintaining the bar and the means connecting the bar and framein disengaged relation when the lever is actuated.

2. In a hay rake, a frame, a toothed rake-head rockingly supported onthe frame, a presser-bar connected to the rake-head, a couplingconnecting the bar and frame, a lever mounted on the frame having alaterally extending arm, a link connecting the arm and bar, means foractuating the lever, link and bar for rocking the rake-head to raise andlower the teeth thereof, and yielding means connecting the lever andlink for retarding the descent of the rake-head teeth when the lever,link and bar are actuated.

3. In a hay rake, a frame, a toothed rakehead rockingly supported on theframe, a presserbar connected to the rake-head, a coupling connectingthe bar and frame, a lever mounted on the frame, a link connecting thelever and bar, said bar, coupling, lever and link constituting a linkagesystem, means for actuating said linkage system, and yielding meansconnecting the lever and link for controlling the descent of therakehead teeth when the linkage system is actuated.

4. In a hay rake, a frame, a toothed rake-head rockingly supported onthe frame, a presser-bar connected to the rake-head, means connectingsaid bar and frame, a lever mounted on the frame, a linkage connectingthe. bar and lever, said bar, connecting means, lever and linkageconstituting a linkage system, means for actuating said linkage system,and adjusting means on the frame engageable with the lever forcontrolling the position of the bar said bar in relation to the meansconnecting it to the frame when the linkage is actuated.

5. In a hay rake, a frame, a toothed rake-head rockingly supported onthe frame, a presser-bar connected to the rake-head, means connectingsaid bar to the frame, a lever mounted on the frame, a link connectingthe bar and lever, said bar, connecting means, lever and linkconstituting a linkage system, means for actuating the linkage system, aclevis-strap associated. with the link, and a tension-rod connected tothe lever and clevis-strap for controlling the descent of the rake-headteeth when said linkage system is actuated.

CARL E. WHITE.

